CN105090011B - A4VSO pump DR valve arrangement - Google Patents
A4VSO pump DR valve arrangement Download PDFInfo
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- CN105090011B CN105090011B CN201410201155.1A CN201410201155A CN105090011B CN 105090011 B CN105090011 B CN 105090011B CN 201410201155 A CN201410201155 A CN 201410201155A CN 105090011 B CN105090011 B CN 105090011B
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- a4vso
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- duct
- spool chamber
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Abstract
The invention discloses a kind of A4VSO pump DR valve arrangement. it comprises valve body, tail nut assembly, main valve plug and pressure regulation assembly, and described valve body is provided with spool chamber, the first duct, the second duct, pressure release duct, the first connected entrance, the second connected entrance and connected pore channel; Also comprise a small valve core, and the described main valve plug end face axial corresponding with described tail nut assembly have spool bore, described small valve core is slidably arranged in described spool bore; Corresponding described first connected entrance in side of described main valve plug radially has the intercommunicating pore being communicated with spool bore. and the present invention can alleviate the wear phenomenon that main valve plug occurs because of stressed friction greatly, effectively extend the service life of main valve plug, and can meet the stable requirement of high pressure.
Description
Technical field
The invention belongs to A4VSO axial plunger pump technical field of structures, be specifically related to the improvement of a kind of A4VSO pump DR valve arrangement.
Background technology
As shown in Figure 1, the DR valve of existing A4VSO axial plunger pump mainly comprises valve body 1, tail nut assembly 2, main valve plug 3 With pressure regulation assembly, wherein valve body 1 is provided with confession and the spool chamber 11 of main valve plug is installed, is communicated with spool chamber one end and is supplied to install tail nut The first duct 12 of assembly, be communicated with the spool chamber other end and supply to install the second duct 13 of pressure regulation assembly, with spool chamber another Pressure release duct 14 that end is communicated with, be communicated with described spool chamber and supply to communicate with oil pump force feed mouth and oil pump variable piston small end the One connected entrance 15, be communicated with described spool chamber and supply the second connected entrance 16 communicating with the large end of oil pump variable piston, and being communicated with the One duct 12 and the first connected entrance 14 communicate duct 17. pressure regulation assemblies mainly by spring guiding pad 41, dextrorotation pressure spring 42, Left-handed pressure spring 43 and pressure regulation combination 44 compositions. consult Fig. 2, region A is and oil pump force feed mouth and oil pump variable piston small end Communicate, region B communicates with the large end of oil pump variable piston, and region C communicates with oil pump drain tap. the operation principle of existing DR valve For: by moving left and right of main valve plug, make region B or communicate (under this operating mode, oil pump capacity reduces) with region A; Or with region C (under this operating mode, oil pump capacity increases) communicates; Or be situated between between two regions, (under this operating mode, oil pump capacity is constant, and pressure is DR The setting value of valve). conventionally, oil pump force feed mouth pressure do not reach DR valve setting value before oil pump in maximum pump discharge operating mode. In the time that force feed mouth pressure wants to exceed setting value, oil pump capacity is reduced to certain value, and making force feed mouth pressure is the setting value of DR valve. In such cases, the stressed of spool the right and left equate, the stressed of its left side regulated by two pressure springs, is called for short For F1, the power on the right is referred to as F2, and F2 is the pressure P of force feed mouth and the product of spool sectional area S, i.e. F1=F2=P*S, Can derive thus: P=F1/S., due to the sectional area certain (being generally 0.5024 square centimeter) of spool, therefore will improve DR Valve setting value P, will heighten spring force F1, under normal circumstances, in the time that DR valve setting value pressure P requires to exceed 200Bar, bullet Spring force F1 will exceed under 1000N. perfect condition, and the direction of spring force F1 is definitely contrary with F2, but uses in reality In process, due to spring be not one real cylindrical, all there is error in its perpendicularity and the depth of parallelism, spring is being subject in addition When pressure, also can produce distortion inaccuracy, even if be added with spring guiding pad, the angle of F1 and F2 is nisi 180 degree also, about 170 degree If between～180 degree. angle is 175 degree, and the power that can produce about 87N is radially pushed spool, if spool material is poor, valve Core can produce extrusion friction with valve body hole wall under the radial load effect of this 87N, thereby enhance faster wear reduces service life, But also the problem of meeting build-up of pressure fluctuation.
Summary of the invention
The object of the present invention is to provide a kind of A4VSO pump DR valve arrangement, to solve the deficiencies in the prior art part.
For achieving the above object, the present invention adopts following technical scheme:
A4VSO pump DR valve arrangement, comprises valve body, tail nut assembly, main valve plug and pressure regulation assembly, and described valve body is provided with: Spool chamber, for main valve plug is installed; First duct, connects and supplies to install tail nut assembly with described spool chamber one end; The second duct, Connect and supply regulation component is installed with the spool chamber other end; Pressure release duct, is connected with the other end of the spool chamber; First Connected entrance, is connected and is supplied to press oil mouth with oil pump with the spool chamber and oil pump variable piston small end is communicated; Second connected entrance, with institute State spool chamber to connect and supply to communicate with the big end of oil pump variable piston; The valve body is provided with one and is respectively communicated with spool chamber one end and pressure release The connected pore channel in duct; Also include a small valve core, and corresponding with the tail nut assembly end face axial of the main valve plug is opened There is spool bore, the small valve core is slidably arranged in the spool bore; Corresponding first connected entrance in the side of the main valve plug Radially the intercommunicating pore connected with spool bore is provided with.
Preferably, the diameter of the small valve core is not less than 2 millimeters and no more than 4 millimeters.Further preferably, the little valve
A diameter of 3 millimeters of core.
Preferably, the regulation component is mainly by spring guiding pad, dextrorotation pressure spring, left-handed pressure spring and pressure regulation
Group is combined into.
Preferably, the spring ratio value of the dextrorotation pressure spring and left-handed pressure spring is no less than 15N/mm and not
It is more than 20N/mm.Further preferably, the spring ratio value of the dextrorotation pressure spring and left-handed pressure spring is 20N/mm.
The present invention can mitigate significantly the wear phenomenon that main valve plug occurs because of stress friction, have by adopting said structure
Effect extends the service life of main valve plug, and can meet the requirement of high-voltage-stable.
Description of the drawings
Fig. 1 is the structural representation of existing DR valves.
Fig. 2 is the fundamental diagram of existing DR valves.
Fig. 3 is the structural representation of the present invention.
Fig. 4 is the fundamental diagram of the present invention.
In figure：
1 valve body；11 spool chambers；12 first ducts；13 second ducts；14 pressure release ducts；15 first connect
Port；16 second connected entrances；17 communicate duct；18 connected pore channels；2 tail nut assemblies；3 main valve plugs；31 valves
Core bore；32 intercommunicating pores；41 spring guiding pads；42 dextrorotation pressure springs；43 left-handed pressure springs；44 pressure regulation groups
Close；5 small valve cores；
A regions A；B regions B；C regions C.
The present invention is described in further detail in conjunction with drawings and Examples.
Specific embodiment
As shown in figure 3, A4VSO pumps DR valve arrangements of the present invention, increase on the basis of tying up to existing DR valve arrangements
Small valve core structure, i.e., be mainly made up of valve body 1, tail nut assembly 2, main valve plug 3, small valve core 5 and regulation component.
Spool chamber 11, the first duct 12, the second duct 13, pressure release duct 14, the first connected entrance 15 is again provided with valve body 1
With the second connected entrance 16, and arrange from unlike existing DR valves, being not provided with communicating duct be respectively communicated with spool chamber one end and
The connected pore channel 18 in pressure release duct；And, the size in the first duct has been deepened.
The end face axial corresponding with tail nut assembly 2 of main valve plug 3 is provided with spool bore 31, and small valve core 5 is slidably arranged in valve
In core bore 31.And corresponding first connected entrance, 15 radial direction in the side of main valve plug 3 is provided with the intercommunicating pore 32 connected with spool bore 31.Little valve
The diameter of core 5 is not less than 2 millimeters and no more than 4 millimeters, preferably 3 millimeters.
Regulation component as the composition of existing DR valves, equally by spring guiding pad 41, dextrorotation pressure spring 42, left-handed tune
Pressing spring 43 and pressure regulation combination 44 are constituted.And be with the difference of existing DR valves, dextrorotation pressure spring 42 and left-handed pressure regulation
The spring ratio of spring 43 is less, and both spring ratio values are no less than 15N/mm and no more than 20N/mm, preferably 20N/mm.
As shown in figure 4, the operation principle of the present invention is as follows：
Of the invention is moving left and right by main valve plug as existing DR valves, makes region B or communicates (this feelings with region A
Under condition, oil pump capacity reduces), or communicate with region C (oil pump capacity increase in the case of this), or (this feelings between two regions
Under condition, oil pump capacity is constant, and pressure is DR valve setting values).In brief, oil pump force feed mouth pressure be not up to DR valves setting value it
Front oil pump is maximum pump discharge.When force feed mouth pressure is intended to more than setting value, oil pump capacity is decreased to certain value so that force feed mouth pressure
For the setting value of DR valves, in this case, the power of valve element the right and left is equal.Power on the right of which is adjusted by two pressure springs
Fixed, referred to as Fa.The power on the left side is referred to as Fb, is the product of the pressure P and small valve core sectional area S that press oil mouth, is both P*S.That
Fa=Fb=P*S.Thus P=Fa/S is released.Certain (the about 0.07cm of small valve core sectional area2).Compare with existing DR valves, if
DR valves require pressure settings P for 200Bar, and two pressure springs only need the power for setting up 140N.If the angle of Fa and Fb is
175 degree, the radial force suffered by valve element is about 12N, and this power is only the 1/7 of existing DR valves.Thus the radial direction suffered by main valve plug
Power just significantly can reduce, and increase the service life then.While reducing extrusion friction, stable pressure just can be obtained.
Claims (6)
1.A4VSO pumps DR valve arrangements, including valve body, tail nut assembly, main valve plug and regulation component, the valve body is provided with：
Spool chamber, for installing main valve plug；
First duct, connects and supplies to install tail nut assembly with described spool chamber one end；
Second duct, connects and supplies to install regulation component with the spool chamber other end；
Pressure release duct, is connected with the other end of the spool chamber；
First connected entrance, is connected and is supplied to press oil mouth with oil pump with the spool chamber and oil pump variable piston small end is communicated；
Second connected entrance, connects and supplies to communicate with the big end of oil pump variable piston with the spool chamber；Characterized in that,
The valve body is provided with a connected pore channel for being respectively communicated with spool chamber one end and pressure release duct；
Also include a small valve core, and corresponding with the tail nut assembly end face axial of the main valve plug is provided with spool bore, institute
State small valve core to be slidably arranged in the spool bore；Corresponding first connected entrance in the side of the main valve plug is radially provided with and valve
The intercommunicating pore of core bore connection.
2. A4VSO pumps DR valve arrangements according to claim 1, it is characterised in that the diameter of the small valve core is not less than 2
Millimeter and no more than 4 millimeters.
3. A4VSO pumps DR valve arrangements according to claim 2, it is characterised in that a diameter of 3 milli of the small valve core
Rice.
4. according to the arbitrary described A4VSO pumps DR valve arrangements of claims 1 to 3, it is characterised in that the regulation component is main
It is combined into by spring guiding pad, dextrorotation pressure spring, left-handed pressure spring and pressure regulation group.
5. A4VSO pumps DR valve arrangements according to claim 4, it is characterised in that the dextrorotation pressure spring and left-handed
The spring ratio value of pressure spring is no less than 15N/mm and no more than 20N/mm.
6. A4VSO pumps DR valve arrangements according to claim 5, it is characterised in that the dextrorotation pressure spring and left-handed
The spring ratio value of pressure spring is 20N/mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410201155.1A CN105090011B (en) | 2014-05-13 | 2014-05-13 | A4VSO pump DR valve arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410201155.1A CN105090011B (en) | 2014-05-13 | 2014-05-13 | A4VSO pump DR valve arrangement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105090011A CN105090011A (en) | 2015-11-25 |
| CN105090011B true CN105090011B (en) | 2017-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410201155.1A Active CN105090011B (en) | 2014-05-13 | 2014-05-13 | A4VSO pump DR valve arrangement |
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| Country | Link |
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| CN (1) | CN105090011B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN217977455U (en) * | 2021-05-20 | 2022-12-06 | 盾安环境技术有限公司 | Reversible solenoid valve and air conditioning unit |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101907091A (en) * | 2010-08-20 | 2010-12-08 | 南京大地水刀股份有限公司 | Novel balanced type water inlet and outlet valve group of ultrahigh pressure supercharger |
| CN202301250U (en) * | 2011-09-22 | 2012-07-04 | 宁波汉商液压有限公司 | Ultrahigh pressure proportional relief valve |
| CN202391714U (en) * | 2011-11-30 | 2012-08-22 | 佛山市科达液压机械有限公司 | Bottom valve of constant pressure pump with pressure-reduction starting function |
| CN203420858U (en) * | 2013-07-19 | 2014-02-05 | 佛山市科达液压机械有限公司 | Novel hydraulic pump constant-flow output and standby state control structure |
| CN103727086A (en) * | 2014-01-20 | 2014-04-16 | 南京工程学院 | Hydraulically-controlled proportional valve |
| CN203867867U (en) * | 2014-05-13 | 2014-10-08 | 佛山市科达液压机械有限公司 | Novel DR valve structure for A4VSO pump |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4892697B2 (en) * | 2005-12-09 | 2012-03-07 | 日本電産サンキョー株式会社 | Valve drive device, control method for valve drive device, and pump |
-
2014
- 2014-05-13 CN CN201410201155.1A patent/CN105090011B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101907091A (en) * | 2010-08-20 | 2010-12-08 | 南京大地水刀股份有限公司 | Novel balanced type water inlet and outlet valve group of ultrahigh pressure supercharger |
| CN202301250U (en) * | 2011-09-22 | 2012-07-04 | 宁波汉商液压有限公司 | Ultrahigh pressure proportional relief valve |
| CN202391714U (en) * | 2011-11-30 | 2012-08-22 | 佛山市科达液压机械有限公司 | Bottom valve of constant pressure pump with pressure-reduction starting function |
| CN203420858U (en) * | 2013-07-19 | 2014-02-05 | 佛山市科达液压机械有限公司 | Novel hydraulic pump constant-flow output and standby state control structure |
| CN103727086A (en) * | 2014-01-20 | 2014-04-16 | 南京工程学院 | Hydraulically-controlled proportional valve |
| CN203867867U (en) * | 2014-05-13 | 2014-10-08 | 佛山市科达液压机械有限公司 | Novel DR valve structure for A4VSO pump |
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| Publication number | Publication date |
|---|---|
| CN105090011A (en) | 2015-11-25 |
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Address after: No.12, 10 road, Guanglong Industrial Zone, Chencun Town, Shunde District, Foshan City, Guangdong Province, 528313 Patentee after: Guangdong Keda Hydraulic Technology Co.,Ltd. Address before: 528313, No. 1, West Road, Guang Long Industrial Park, Chencun Town, Shunde District, Guangdong, Foshan Patentee before: FOSHAN KEDA HYDRAULIC MACHINERY Co.,Ltd. |
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